VulcanoLE/headers/VulcanoLE/Audio/FFT.h

#pragma once

#include <mutex>
#include <fftw3.h>
#include <VulcanoLE/Audio/Types.h>

class FFT {
public:
    FFT();
    ~FFT();
    void process(stereoSample *frame, double d);
    outputSample *getData();
    bool prepareInput(stereoSample *buffer, uint32_t sampleSize, double scale);
    double hannWindow[BUFFER_SIZE]{};
    int size = BUFFER_SIZE;
protected:
    fftw_complex *m_fftwInputLeft{};
    fftw_complex *m_fftwInputRight{};
    fftw_complex *m_fftwOutputLeft{};
    fftw_complex *m_fftwOutputRight{};
    outputSample *m_sample = new outputSample(BUFFER_SIZE);
    fftw_plan m_fftwPlanLeft{};
    fftw_plan m_fftwPlanRight{};
    std::mutex m_mtx;
    size_t m_fftwResults;
    static double valueToAmp(double value);
    double times;
    static double limit;

};